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    hello
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国哥
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我是<br/>标签<br/>
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<h1 align="left">标题1</h1>
<h2 align="center">标题2</h2>
<h3 align="right">标题3</h3>
<h4>标题4</h4>
<h5>标题5</h5>
<h6>标题6</h6>
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<!--表格-->
<table border="1" width="300" align="center" cellspacing="0">
    <tr>
        <th>1.1</th>
        <th>1.2</th>
        <th>1.3</th>
    </tr>
    <tr>
        <td>2.1</td>
        <td>2.2</td>
        <td>2.3</td>
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    <tr>
        <td>3.1</td>
        <td>3.2</td>
        <td>3.3</td>
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    <tr>
        <th colspan="2">1.1</th>
        <th>1.3</th>
        <th>1.4</th>
        <th>1.5</th>
    </tr>
    <tr>
        <td rowspan="2">2.1</td>
        <td>2.2</td>
        <td>2.3</td>
        <td>2.4</td>
        <td>2.5</td>
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    <tr>
        <td>3.2</td>
        <td>3.3</td>
        <td>3.4</td>
        <td>3.5</td>
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    <tr>
        <td>4.1</td>
        <td>4.2</td>
        <td>4.3</td>
        <td colspan="2" rowspan="2">4.4</td>
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    <tr>
        <td>5.1</td>
        <td>5.2</td>
        <td>5.3</td>
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